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  • When monochromatic radiation of intensity I fall on a metal surface, the number of photoelectron and their maximum kinetic energy are N and T respectively. If the intensity of radiation is 2I, the

When monochromatic radiation of intensity I fall on a metal surface, the number of photoelectron and their maximum kinetic energy are N and T respectively. If the intensity of radiation is 2I, the number of emitted electrons and their maximum kinetic energy are respectively

Option: 1

N and 2T


Option: 2

2N and T


Option: 3

2N and 2T


Option: 4

N and T


Answers (1)

best_answer

i) Kinetic energy of photoelectrons depends on the frequency of incident radiations and is independent of the intensity of illumination.
ii) A number of photoelectrons depend upon the intensity.

As the number of photons is proportional to intensity of radiation, when intensity is doubled, number of photons will become doubled i.e  2N .
Since the maximum kinetic does not depend on intensity of the radiation so it will remain same i.e T. 

Posted by

vishal kumar

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